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ultra

[uhl-truh] /ˈʌl trə/
adjective
1.
going beyond what is usual or ordinary; excessive; extreme.
noun
2.
an extremist, as in politics, religion, fashion, etc.
3.
(initial capital letter) Military. the British code name for intelligence gathered by decrypting German wireless communications enciphered on the Enigma machine during World War II.
Origin
independent use of ultra-, or shortening of words prefixed with it

ultra-

1.
a prefix occurring originally in loanwords from Latin, with the basic meaning “on the far side of, beyond.” In relation to the base to which it is prefixed, ultra-, has the senses “located beyond, on the far side of” (ultramontane; ultraviolet), “carrying to the furthest degree possible, on the fringe of” (ultraleft; ultramodern), “extremely” (ultralight); nouns to which it is added denote, in general, objects, properties, phenomena, etc., that surpass customary norms, or instruments designed to produce or deal with such things (ultramicroscope; ultrasound; ultrastructure).
Origin
< Latin ultrā (adv. and preposition) on the far side (of), beyond, derivative of *ult(e)r- located beyond

ne plus ultra

[ne ploo s oo l-trah; English nee pluhs uhl-truh, ney] /ˈnɛ ˌplʊs ˈʊl trɑ; English ˈni ˌplʌs ˈʌl trə, ˈneɪ/
Latin.
1.
the highest point; acme.
2.
the most intense degree of a quality or state.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for ultra
  • It degrades in ultra-violet light but provides control on plant surfaces for up to seven days.
  • We sat on the roof deck, where the ambience was ultra-simple: a sheet of brown paper laid across a picnic table.
  • Previous experiments had managed the feat at ultra-cold temperatures, or by using exotic semiconductors such as gallium arsenide.
  • Wait until people figure out how the ultra wealthy have been using the low stock prices to pump money out of the economy.
  • Raw organic milk has hundreds of times the bacteria of conventional milk, which is why it has to be ultra pasteurized.
  • Also much ozone to continually block out ultra-violet rays.
  • ultra caps are well-suited for energy recuperation systems that can increase fuel efficiency and reduce emissions.
  • With ultra-low-sulfur diesel, the particulate emissions are less too.
  • The brain is an ultra fine loom, and many of its functions are regulated on a mind-bogglingly small physical scale.
  • There are far too many ultra-small particles currently identified but not understood that reside in our cells and bodies.
British Dictionary definitions for ultra

ultra

/ˈʌltrə/
adjective
1.
extreme or immoderate, esp in beliefs or opinions
noun
2.
an extremist
Word Origin
C19: from Latin: beyond, from ulter distant

ne plus ultra

/ˈneɪ ˈplʊs ˈʊltrɑː/
noun
1.
the extreme or perfect point or state
Word Origin
literally: not more beyond (that is, go no further), allegedly a warning to sailors inscribed on the Pillars of Hercules at Gibraltar

ultra-

prefix
1.
beyond or surpassing a specified extent, range, or limit: ultramicroscopic
2.
extreme or extremely: ultramodern
Word Origin
from Latin ultrā beyond; see ultra
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ultra

ultra-

prefix meaning "beyond" (ultraviolet) or "extremely" (ultramodern), from Latin ultra- from ultra (adv. and prep.) "beyond, on the further side," from PIE *al- "beyond." In common use from early 19c., it appears to have arisen from French political designations. As its own word, a noun meaning "extremist" of various stripes, it is first recorded 1817, from French ultra, shortening of ultra-royaliste "extreme royalist."

ne plus ultra

"utmost limit to which one can go," Latin, literally "no more beyond;" the motto traditionally inscribed on the Pillars of Hercules.

Online Etymology Dictionary, © 2010 Douglas Harper
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ultra in Medicine

ultra- pref.

  1. Beyond; on the other side of: ultraviolet.

  2. Beyond the range, scope, or limit of: ultrasonic.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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